use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/lucas-clemente/quic-go/h2quic/client.go

@@ -0,0 +1,314 @@
+package h2quic
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"sync"
+
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/hpack"
+	"golang.org/x/net/idna"
+
+	quic "github.com/lucas-clemente/quic-go"
+	"github.com/lucas-clemente/quic-go/internal/protocol"
+	"github.com/lucas-clemente/quic-go/internal/utils"
+	"github.com/lucas-clemente/quic-go/qerr"
+)
+
+type roundTripperOpts struct {
+	DisableCompression bool
+}
+
+var dialAddr = quic.DialAddr
+
+// client is a HTTP2 client doing QUIC requests
+type client struct {
+	mutex sync.RWMutex
+
+	tlsConf *tls.Config
+	config  *quic.Config
+	opts    *roundTripperOpts
+
+	hostname     string
+	handshakeErr error
+	dialOnce     sync.Once
+	dialer       func(network, addr string, tlsCfg *tls.Config, cfg *quic.Config) (quic.Session, error)
+
+	session       quic.Session
+	headerStream  quic.Stream
+	headerErr     *qerr.QuicError
+	headerErrored chan struct{} // this channel is closed if an error occurs on the header stream
+	requestWriter *requestWriter
+
+	responses map[protocol.StreamID]chan *http.Response
+
+	logger utils.Logger
+}
+
+var _ http.RoundTripper = &client{}
+
+var defaultQuicConfig = &quic.Config{
+	RequestConnectionIDOmission: true,
+	KeepAlive:                   true,
+}
+
+// newClient creates a new client
+func newClient(
+	hostname string,
+	tlsConfig *tls.Config,
+	opts *roundTripperOpts,
+	quicConfig *quic.Config,
+	dialer func(network, addr string, tlsCfg *tls.Config, cfg *quic.Config) (quic.Session, error),
+) *client {
+	config := defaultQuicConfig
+	if quicConfig != nil {
+		config = quicConfig
+	}
+	return &client{
+		hostname:      authorityAddr("https", hostname),
+		responses:     make(map[protocol.StreamID]chan *http.Response),
+		tlsConf:       tlsConfig,
+		config:        config,
+		opts:          opts,
+		headerErrored: make(chan struct{}),
+		dialer:        dialer,
+		logger:        utils.DefaultLogger.WithPrefix("client"),
+	}
+}
+
+// dial dials the connection
+func (c *client) dial() error {
+	var err error
+	if c.dialer != nil {
+		c.session, err = c.dialer("udp", c.hostname, c.tlsConf, c.config)
+	} else {
+		c.session, err = dialAddr(c.hostname, c.tlsConf, c.config)
+	}
+	if err != nil {
+		return err
+	}
+
+	// once the version has been negotiated, open the header stream
+	c.headerStream, err = c.session.OpenStream()
+	if err != nil {
+		return err
+	}
+	c.requestWriter = newRequestWriter(c.headerStream, c.logger)
+	go c.handleHeaderStream()
+	return nil
+}
+
+func (c *client) handleHeaderStream() {
+	decoder := hpack.NewDecoder(4096, func(hf hpack.HeaderField) {})
+	h2framer := http2.NewFramer(nil, c.headerStream)
+
+	var err error
+	for err == nil {
+		err = c.readResponse(h2framer, decoder)
+	}
+	if quicErr, ok := err.(*qerr.QuicError); !ok || quicErr.ErrorCode != qerr.PeerGoingAway {
+		c.logger.Debugf("Error handling header stream: %s", err)
+	}
+	c.headerErr = qerr.Error(qerr.InvalidHeadersStreamData, err.Error())
+	// stop all running request
+	close(c.headerErrored)
+}
+
+func (c *client) readResponse(h2framer *http2.Framer, decoder *hpack.Decoder) error {
+	frame, err := h2framer.ReadFrame()
+	if err != nil {
+		return err
+	}
+	hframe, ok := frame.(*http2.HeadersFrame)
+	if !ok {
+		return errors.New("not a headers frame")
+	}
+	mhframe := &http2.MetaHeadersFrame{HeadersFrame: hframe}
+	mhframe.Fields, err = decoder.DecodeFull(hframe.HeaderBlockFragment())
+	if err != nil {
+		return fmt.Errorf("cannot read header fields: %s", err.Error())
+	}
+
+	c.mutex.RLock()
+	responseChan, ok := c.responses[protocol.StreamID(hframe.StreamID)]
+	c.mutex.RUnlock()
+	if !ok {
+		return fmt.Errorf("response channel for stream %d not found", hframe.StreamID)
+	}
+
+	rsp, err := responseFromHeaders(mhframe)
+	if err != nil {
+		return err
+	}
+	responseChan <- rsp
+	return nil
+}
+
+// Roundtrip executes a request and returns a response
+func (c *client) RoundTrip(req *http.Request) (*http.Response, error) {
+	// TODO: add port to address, if it doesn't have one
+	if req.URL.Scheme != "https" {
+		return nil, errors.New("quic http2: unsupported scheme")
+	}
+	if authorityAddr("https", hostnameFromRequest(req)) != c.hostname {
+		return nil, fmt.Errorf("h2quic Client BUG: RoundTrip called for the wrong client (expected %s, got %s)", c.hostname, req.Host)
+	}
+
+	c.dialOnce.Do(func() {
+		c.handshakeErr = c.dial()
+	})
+
+	if c.handshakeErr != nil {
+		return nil, c.handshakeErr
+	}
+
+	hasBody := (req.Body != nil)
+
+	responseChan := make(chan *http.Response)
+	dataStream, err := c.session.OpenStreamSync()
+	if err != nil {
+		_ = c.closeWithError(err)
+		return nil, err
+	}
+	c.mutex.Lock()
+	c.responses[dataStream.StreamID()] = responseChan
+	c.mutex.Unlock()
+
+	var requestedGzip bool
+	if !c.opts.DisableCompression && req.Header.Get("Accept-Encoding") == "" && req.Header.Get("Range") == "" && req.Method != "HEAD" {
+		requestedGzip = true
+	}
+	// TODO: add support for trailers
+	endStream := !hasBody
+	err = c.requestWriter.WriteRequest(req, dataStream.StreamID(), endStream, requestedGzip)
+	if err != nil {
+		_ = c.closeWithError(err)
+		return nil, err
+	}
+
+	resc := make(chan error, 1)
+	if hasBody {
+		go func() {
+			resc <- c.writeRequestBody(dataStream, req.Body)
+		}()
+	}
+
+	var res *http.Response
+
+	var receivedResponse bool
+	var bodySent bool
+
+	if !hasBody {
+		bodySent = true
+	}
+
+	ctx := req.Context()
+	for !(bodySent && receivedResponse) {
+		select {
+		case res = <-responseChan:
+			receivedResponse = true
+			c.mutex.Lock()
+			delete(c.responses, dataStream.StreamID())
+			c.mutex.Unlock()
+		case err := <-resc:
+			bodySent = true
+			if err != nil {
+				return nil, err
+			}
+		case <-ctx.Done():
+			// error code 6 signals that stream was canceled
+			dataStream.CancelRead(6)
+			dataStream.CancelWrite(6)
+			c.mutex.Lock()
+			delete(c.responses, dataStream.StreamID())
+			c.mutex.Unlock()
+			return nil, ctx.Err()
+		case <-c.headerErrored:
+			// an error occurred on the header stream
+			_ = c.closeWithError(c.headerErr)
+			return nil, c.headerErr
+		}
+	}
+
+	// TODO: correctly set this variable
+	var streamEnded bool
+	isHead := (req.Method == "HEAD")
+
+	res = setLength(res, isHead, streamEnded)
+
+	if streamEnded || isHead {
+		res.Body = noBody
+	} else {
+		res.Body = dataStream
+		if requestedGzip && res.Header.Get("Content-Encoding") == "gzip" {
+			res.Header.Del("Content-Encoding")
+			res.Header.Del("Content-Length")
+			res.ContentLength = -1
+			res.Body = &gzipReader{body: res.Body}
+			res.Uncompressed = true
+		}
+	}
+
+	res.Request = req
+	return res, nil
+}
+
+func (c *client) writeRequestBody(dataStream quic.Stream, body io.ReadCloser) (err error) {
+	defer func() {
+		cerr := body.Close()
+		if err == nil {
+			// TODO: what to do with dataStream here? Maybe reset it?
+			err = cerr
+		}
+	}()
+
+	_, err = io.Copy(dataStream, body)
+	if err != nil {
+		// TODO: what to do with dataStream here? Maybe reset it?
+		return err
+	}
+	return dataStream.Close()
+}
+
+func (c *client) closeWithError(e error) error {
+	if c.session == nil {
+		return nil
+	}
+	return c.session.CloseWithError(quic.ErrorCode(qerr.InternalError), e)
+}
+
+// Close closes the client
+func (c *client) Close() error {
+	if c.session == nil {
+		return nil
+	}
+	return c.session.Close()
+}
+
+// copied from net/transport.go
+
+// authorityAddr returns a given authority (a host/IP, or host:port / ip:port)
+// and returns a host:port. The port 443 is added if needed.
+func authorityAddr(scheme string, authority string) (addr string) {
+	host, port, err := net.SplitHostPort(authority)
+	if err != nil { // authority didn't have a port
+		port = "443"
+		if scheme == "http" {
+			port = "80"
+		}
+		host = authority
+	}
+	if a, err := idna.ToASCII(host); err == nil {
+		host = a
+	}
+	// IPv6 address literal, without a port:
+	if strings.HasPrefix(host, "[") && strings.HasSuffix(host, "]") {
+		return host + ":" + port
+	}
+	return net.JoinHostPort(host, port)
+}

vendor/github.com/lucas-clemente/quic-go/h2quic/gzipreader.go

@@ -0,0 +1,35 @@
+package h2quic
+
+// copied from net/transport.go
+
+// gzipReader wraps a response body so it can lazily
+// call gzip.NewReader on the first call to Read
+import (
+	"compress/gzip"
+	"io"
+)
+
+// call gzip.NewReader on the first call to Read
+type gzipReader struct {
+	body io.ReadCloser // underlying Response.Body
+	zr   *gzip.Reader  // lazily-initialized gzip reader
+	zerr error         // sticky error
+}
+
+func (gz *gzipReader) Read(p []byte) (n int, err error) {
+	if gz.zerr != nil {
+		return 0, gz.zerr
+	}
+	if gz.zr == nil {
+		gz.zr, err = gzip.NewReader(gz.body)
+		if err != nil {
+			gz.zerr = err
+			return 0, err
+		}
+	}
+	return gz.zr.Read(p)
+}
+
+func (gz *gzipReader) Close() error {
+	return gz.body.Close()
+}

vendor/github.com/lucas-clemente/quic-go/h2quic/request.go

@@ -0,0 +1,77 @@
+package h2quic
+
+import (
+	"crypto/tls"
+	"errors"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"golang.org/x/net/http2/hpack"
+)
+
+func requestFromHeaders(headers []hpack.HeaderField) (*http.Request, error) {
+	var path, authority, method, contentLengthStr string
+	httpHeaders := http.Header{}
+
+	for _, h := range headers {
+		switch h.Name {
+		case ":path":
+			path = h.Value
+		case ":method":
+			method = h.Value
+		case ":authority":
+			authority = h.Value
+		case "content-length":
+			contentLengthStr = h.Value
+		default:
+			if !h.IsPseudo() {
+				httpHeaders.Add(h.Name, h.Value)
+			}
+		}
+	}
+
+	// concatenate cookie headers, see https://tools.ietf.org/html/rfc6265#section-5.4
+	if len(httpHeaders["Cookie"]) > 0 {
+		httpHeaders.Set("Cookie", strings.Join(httpHeaders["Cookie"], "; "))
+	}
+
+	if len(path) == 0 || len(authority) == 0 || len(method) == 0 {
+		return nil, errors.New(":path, :authority and :method must not be empty")
+	}
+
+	u, err := url.Parse(path)
+	if err != nil {
+		return nil, err
+	}
+
+	var contentLength int64
+	if len(contentLengthStr) > 0 {
+		contentLength, err = strconv.ParseInt(contentLengthStr, 10, 64)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &http.Request{
+		Method:        method,
+		URL:           u,
+		Proto:         "HTTP/2.0",
+		ProtoMajor:    2,
+		ProtoMinor:    0,
+		Header:        httpHeaders,
+		Body:          nil,
+		ContentLength: contentLength,
+		Host:          authority,
+		RequestURI:    path,
+		TLS:           &tls.ConnectionState{},
+	}, nil
+}
+
+func hostnameFromRequest(req *http.Request) string {
+	if req.URL != nil {
+		return req.URL.Host
+	}
+	return ""
+}

vendor/github.com/lucas-clemente/quic-go/h2quic/request_body.go

@@ -0,0 +1,29 @@
+package h2quic
+
+import (
+	"io"
+
+	quic "github.com/lucas-clemente/quic-go"
+)
+
+type requestBody struct {
+	requestRead bool
+	dataStream  quic.Stream
+}
+
+// make sure the requestBody can be used as a http.Request.Body
+var _ io.ReadCloser = &requestBody{}
+
+func newRequestBody(stream quic.Stream) *requestBody {
+	return &requestBody{dataStream: stream}
+}
+
+func (b *requestBody) Read(p []byte) (int, error) {
+	b.requestRead = true
+	return b.dataStream.Read(p)
+}
+
+func (b *requestBody) Close() error {
+	// stream's Close() closes the write side, not the read side
+	return nil
+}

vendor/github.com/lucas-clemente/quic-go/h2quic/request_writer.go

@@ -0,0 +1,203 @@
+package h2quic
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+
+	"golang.org/x/net/http/httpguts"
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/hpack"
+
+	quic "github.com/lucas-clemente/quic-go"
+	"github.com/lucas-clemente/quic-go/internal/protocol"
+	"github.com/lucas-clemente/quic-go/internal/utils"
+)
+
+type requestWriter struct {
+	mutex        sync.Mutex
+	headerStream quic.Stream
+
+	henc *hpack.Encoder
+	hbuf bytes.Buffer // HPACK encoder writes into this
+
+	logger utils.Logger
+}
+
+const defaultUserAgent = "quic-go"
+
+func newRequestWriter(headerStream quic.Stream, logger utils.Logger) *requestWriter {
+	rw := &requestWriter{
+		headerStream: headerStream,
+		logger:       logger,
+	}
+	rw.henc = hpack.NewEncoder(&rw.hbuf)
+	return rw
+}
+
+func (w *requestWriter) WriteRequest(req *http.Request, dataStreamID protocol.StreamID, endStream, requestGzip bool) error {
+	// TODO: add support for trailers
+	// TODO: add support for gzip compression
+	// TODO: write continuation frames, if the header frame is too long
+
+	w.mutex.Lock()
+	defer w.mutex.Unlock()
+
+	w.encodeHeaders(req, requestGzip, "", actualContentLength(req))
+	h2framer := http2.NewFramer(w.headerStream, nil)
+	return h2framer.WriteHeaders(http2.HeadersFrameParam{
+		StreamID:      uint32(dataStreamID),
+		EndHeaders:    true,
+		EndStream:     endStream,
+		BlockFragment: w.hbuf.Bytes(),
+		Priority:      http2.PriorityParam{Weight: 0xff},
+	})
+}
+
+// the rest of this files is copied from http2.Transport
+func (w *requestWriter) encodeHeaders(req *http.Request, addGzipHeader bool, trailers string, contentLength int64) ([]byte, error) {
+	w.hbuf.Reset()
+
+	host := req.Host
+	if host == "" {
+		host = req.URL.Host
+	}
+	host, err := httpguts.PunycodeHostPort(host)
+	if err != nil {
+		return nil, err
+	}
+
+	var path string
+	if req.Method != "CONNECT" {
+		path = req.URL.RequestURI()
+		if !validPseudoPath(path) {
+			orig := path
+			path = strings.TrimPrefix(path, req.URL.Scheme+"://"+host)
+			if !validPseudoPath(path) {
+				if req.URL.Opaque != "" {
+					return nil, fmt.Errorf("invalid request :path %q from URL.Opaque = %q", orig, req.URL.Opaque)
+				}
+				return nil, fmt.Errorf("invalid request :path %q", orig)
+			}
+		}
+	}
+
+	// Check for any invalid headers and return an error before we
+	// potentially pollute our hpack state. (We want to be able to
+	// continue to reuse the hpack encoder for future requests)
+	for k, vv := range req.Header {
+		if !httpguts.ValidHeaderFieldName(k) {
+			return nil, fmt.Errorf("invalid HTTP header name %q", k)
+		}
+		for _, v := range vv {
+			if !httpguts.ValidHeaderFieldValue(v) {
+				return nil, fmt.Errorf("invalid HTTP header value %q for header %q", v, k)
+			}
+		}
+	}
+
+	// 8.1.2.3 Request Pseudo-Header Fields
+	// The :path pseudo-header field includes the path and query parts of the
+	// target URI (the path-absolute production and optionally a '?' character
+	// followed by the query production (see Sections 3.3 and 3.4 of
+	// [RFC3986]).
+	w.writeHeader(":authority", host)
+	w.writeHeader(":method", req.Method)
+	if req.Method != "CONNECT" {
+		w.writeHeader(":path", path)
+		w.writeHeader(":scheme", req.URL.Scheme)
+	}
+	if trailers != "" {
+		w.writeHeader("trailer", trailers)
+	}
+
+	var didUA bool
+	for k, vv := range req.Header {
+		lowKey := strings.ToLower(k)
+		switch lowKey {
+		case "host", "content-length":
+			// Host is :authority, already sent.
+			// Content-Length is automatic, set below.
+			continue
+		case "connection", "proxy-connection", "transfer-encoding", "upgrade", "keep-alive":
+			// Per 8.1.2.2 Connection-Specific Header
+			// Fields, don't send connection-specific
+			// fields. We have already checked if any
+			// are error-worthy so just ignore the rest.
+			continue
+		case "user-agent":
+			// Match Go's http1 behavior: at most one
+			// User-Agent. If set to nil or empty string,
+			// then omit it. Otherwise if not mentioned,
+			// include the default (below).
+			didUA = true
+			if len(vv) < 1 {
+				continue
+			}
+			vv = vv[:1]
+			if vv[0] == "" {
+				continue
+			}
+		}
+		for _, v := range vv {
+			w.writeHeader(lowKey, v)
+		}
+	}
+	if shouldSendReqContentLength(req.Method, contentLength) {
+		w.writeHeader("content-length", strconv.FormatInt(contentLength, 10))
+	}
+	if addGzipHeader {
+		w.writeHeader("accept-encoding", "gzip")
+	}
+	if !didUA {
+		w.writeHeader("user-agent", defaultUserAgent)
+	}
+	return w.hbuf.Bytes(), nil
+}
+
+func (w *requestWriter) writeHeader(name, value string) {
+	w.logger.Debugf("http2: Transport encoding header %q = %q", name, value)
+	w.henc.WriteField(hpack.HeaderField{Name: name, Value: value})
+}
+
+// shouldSendReqContentLength reports whether the http2.Transport should send
+// a "content-length" request header. This logic is basically a copy of the net/http
+// transferWriter.shouldSendContentLength.
+// The contentLength is the corrected contentLength (so 0 means actually 0, not unknown).
+// -1 means unknown.
+func shouldSendReqContentLength(method string, contentLength int64) bool {
+	if contentLength > 0 {
+		return true
+	}
+	if contentLength < 0 {
+		return false
+	}
+	// For zero bodies, whether we send a content-length depends on the method.
+	// It also kinda doesn't matter for http2 either way, with END_STREAM.
+	switch method {
+	case "POST", "PUT", "PATCH":
+		return true
+	default:
+		return false
+	}
+}
+
+func validPseudoPath(v string) bool {
+	return (len(v) > 0 && v[0] == '/' && (len(v) == 1 || v[1] != '/')) || v == "*"
+}
+
+// actualContentLength returns a sanitized version of
+// req.ContentLength, where 0 actually means zero (not unknown) and -1
+// means unknown.
+func actualContentLength(req *http.Request) int64 {
+	if req.Body == nil {
+		return 0
+	}
+	if req.ContentLength != 0 {
+		return req.ContentLength
+	}
+	return -1
+}

vendor/github.com/lucas-clemente/quic-go/h2quic/response.go

@@ -0,0 +1,95 @@
+package h2quic
+
+import (
+	"bytes"
+	"errors"
+	"io/ioutil"
+	"net/http"
+	"net/textproto"
+	"strconv"
+	"strings"
+
+	"golang.org/x/net/http2"
+)
+
+// copied from net/http2/transport.go
+
+var errResponseHeaderListSize = errors.New("http2: response header list larger than advertised limit")
+var noBody = ioutil.NopCloser(bytes.NewReader(nil))
+
+// from the handleResponse function
+func responseFromHeaders(f *http2.MetaHeadersFrame) (*http.Response, error) {
+	if f.Truncated {
+		return nil, errResponseHeaderListSize
+	}
+
+	status := f.PseudoValue("status")
+	if status == "" {
+		return nil, errors.New("missing status pseudo header")
+	}
+	statusCode, err := strconv.Atoi(status)
+	if err != nil {
+		return nil, errors.New("malformed non-numeric status pseudo header")
+	}
+
+	// TODO: handle statusCode == 100
+
+	header := make(http.Header)
+	res := &http.Response{
+		Proto:      "HTTP/2.0",
+		ProtoMajor: 2,
+		Header:     header,
+		StatusCode: statusCode,
+		Status:     status + " " + http.StatusText(statusCode),
+	}
+	for _, hf := range f.RegularFields() {
+		key := http.CanonicalHeaderKey(hf.Name)
+		if key == "Trailer" {
+			t := res.Trailer
+			if t == nil {
+				t = make(http.Header)
+				res.Trailer = t
+			}
+			foreachHeaderElement(hf.Value, func(v string) {
+				t[http.CanonicalHeaderKey(v)] = nil
+			})
+		} else {
+			header[key] = append(header[key], hf.Value)
+		}
+	}
+
+	return res, nil
+}
+
+// continuation of the handleResponse function
+func setLength(res *http.Response, isHead, streamEnded bool) *http.Response {
+	if !streamEnded || isHead {
+		res.ContentLength = -1
+		if clens := res.Header["Content-Length"]; len(clens) == 1 {
+			if clen64, err := strconv.ParseInt(clens[0], 10, 64); err == nil {
+				res.ContentLength = clen64
+			}
+		}
+	}
+	return res
+}
+
+// copied from net/http/server.go
+
+// foreachHeaderElement splits v according to the "#rule" construction
+// in RFC 2616 section 2.1 and calls fn for each non-empty element.
+func foreachHeaderElement(v string, fn func(string)) {
+	v = textproto.TrimString(v)
+	if v == "" {
+		return
+	}
+	if !strings.Contains(v, ",") {
+		fn(v)
+		return
+	}
+	for _, f := range strings.Split(v, ",") {
+		if f = textproto.TrimString(f); f != "" {
+			fn(f)
+		}
+	}
+}

vendor/github.com/lucas-clemente/quic-go/h2quic/response_writer.go

@@ -0,0 +1,114 @@
+package h2quic
+
+import (
+	"bytes"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+
+	quic "github.com/lucas-clemente/quic-go"
+	"github.com/lucas-clemente/quic-go/internal/protocol"
+	"github.com/lucas-clemente/quic-go/internal/utils"
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/hpack"
+)
+
+type responseWriter struct {
+	dataStreamID protocol.StreamID
+	dataStream   quic.Stream
+
+	headerStream      quic.Stream
+	headerStreamMutex *sync.Mutex
+
+	header        http.Header
+	status        int // status code passed to WriteHeader
+	headerWritten bool
+
+	logger utils.Logger
+}
+
+func newResponseWriter(
+	headerStream quic.Stream,
+	headerStreamMutex *sync.Mutex,
+	dataStream quic.Stream,
+	dataStreamID protocol.StreamID,
+	logger utils.Logger,
+) *responseWriter {
+	return &responseWriter{
+		header:            http.Header{},
+		headerStream:      headerStream,
+		headerStreamMutex: headerStreamMutex,
+		dataStream:        dataStream,
+		dataStreamID:      dataStreamID,
+		logger:            logger,
+	}
+}
+
+func (w *responseWriter) Header() http.Header {
+	return w.header
+}
+
+func (w *responseWriter) WriteHeader(status int) {
+	if w.headerWritten {
+		return
+	}
+	w.headerWritten = true
+	w.status = status
+
+	var headers bytes.Buffer
+	enc := hpack.NewEncoder(&headers)
+	enc.WriteField(hpack.HeaderField{Name: ":status", Value: strconv.Itoa(status)})
+
+	for k, v := range w.header {
+		for index := range v {
+			enc.WriteField(hpack.HeaderField{Name: strings.ToLower(k), Value: v[index]})
+		}
+	}
+
+	w.logger.Infof("Responding with %d", status)
+	w.headerStreamMutex.Lock()
+	defer w.headerStreamMutex.Unlock()
+	h2framer := http2.NewFramer(w.headerStream, nil)
+	err := h2framer.WriteHeaders(http2.HeadersFrameParam{
+		StreamID:      uint32(w.dataStreamID),
+		EndHeaders:    true,
+		BlockFragment: headers.Bytes(),
+	})
+	if err != nil {
+		w.logger.Errorf("could not write h2 header: %s", err.Error())
+	}
+}
+
+func (w *responseWriter) Write(p []byte) (int, error) {
+	if !w.headerWritten {
+		w.WriteHeader(200)
+	}
+	if !bodyAllowedForStatus(w.status) {
+		return 0, http.ErrBodyNotAllowed
+	}
+	return w.dataStream.Write(p)
+}
+
+func (w *responseWriter) Flush() {}
+
+// This is a NOP. Use http.Request.Context
+func (w *responseWriter) CloseNotify() <-chan bool { return make(<-chan bool) }
+
+// test that we implement http.Flusher
+var _ http.Flusher = &responseWriter{}
+
+// copied from http2/http2.go
+// bodyAllowedForStatus reports whether a given response status code
+// permits a body. See RFC 2616, section 4.4.
+func bodyAllowedForStatus(status int) bool {
+	switch {
+	case status >= 100 && status <= 199:
+		return false
+	case status == 204:
+		return false
+	case status == 304:
+		return false
+	}
+	return true
+}

vendor/github.com/lucas-clemente/quic-go/h2quic/response_writer_closenotifier.go

@@ -0,0 +1,9 @@
+package h2quic
+
+import "net/http"
+
+// The CloseNotifier is a deprecated interface, and staticcheck will report that from Go 1.11.
+// By defining it in a separate file, we can exclude this file from staticcheck.
+
+// test that we implement http.CloseNotifier
+var _ http.CloseNotifier = &responseWriter{}

vendor/github.com/lucas-clemente/quic-go/h2quic/roundtrip.go

@@ -0,0 +1,179 @@
+package h2quic
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"sync"
+
+	quic "github.com/lucas-clemente/quic-go"
+
+	"golang.org/x/net/http/httpguts"
+)
+
+type roundTripCloser interface {
+	http.RoundTripper
+	io.Closer
+}
+
+// RoundTripper implements the http.RoundTripper interface
+type RoundTripper struct {
+	mutex sync.Mutex
+
+	// DisableCompression, if true, prevents the Transport from
+	// requesting compression with an "Accept-Encoding: gzip"
+	// request header when the Request contains no existing
+	// Accept-Encoding value. If the Transport requests gzip on
+	// its own and gets a gzipped response, it's transparently
+	// decoded in the Response.Body. However, if the user
+	// explicitly requested gzip it is not automatically
+	// uncompressed.
+	DisableCompression bool
+
+	// TLSClientConfig specifies the TLS configuration to use with
+	// tls.Client. If nil, the default configuration is used.
+	TLSClientConfig *tls.Config
+
+	// QuicConfig is the quic.Config used for dialing new connections.
+	// If nil, reasonable default values will be used.
+	QuicConfig *quic.Config
+
+	// Dial specifies an optional dial function for creating QUIC
+	// connections for requests.
+	// If Dial is nil, quic.DialAddr will be used.
+	Dial func(network, addr string, tlsCfg *tls.Config, cfg *quic.Config) (quic.Session, error)
+
+	clients map[string]roundTripCloser
+}
+
+// RoundTripOpt are options for the Transport.RoundTripOpt method.
+type RoundTripOpt struct {
+	// OnlyCachedConn controls whether the RoundTripper may
+	// create a new QUIC connection. If set true and
+	// no cached connection is available, RoundTrip
+	// will return ErrNoCachedConn.
+	OnlyCachedConn bool
+}
+
+var _ roundTripCloser = &RoundTripper{}
+
+// ErrNoCachedConn is returned when RoundTripper.OnlyCachedConn is set
+var ErrNoCachedConn = errors.New("h2quic: no cached connection was available")
+
+// RoundTripOpt is like RoundTrip, but takes options.
+func (r *RoundTripper) RoundTripOpt(req *http.Request, opt RoundTripOpt) (*http.Response, error) {
+	if req.URL == nil {
+		closeRequestBody(req)
+		return nil, errors.New("quic: nil Request.URL")
+	}
+	if req.URL.Host == "" {
+		closeRequestBody(req)
+		return nil, errors.New("quic: no Host in request URL")
+	}
+	if req.Header == nil {
+		closeRequestBody(req)
+		return nil, errors.New("quic: nil Request.Header")
+	}
+
+	if req.URL.Scheme == "https" {
+		for k, vv := range req.Header {
+			if !httpguts.ValidHeaderFieldName(k) {
+				return nil, fmt.Errorf("quic: invalid http header field name %q", k)
+			}
+			for _, v := range vv {
+				if !httpguts.ValidHeaderFieldValue(v) {
+					return nil, fmt.Errorf("quic: invalid http header field value %q for key %v", v, k)
+				}
+			}
+		}
+	} else {
+		closeRequestBody(req)
+		return nil, fmt.Errorf("quic: unsupported protocol scheme: %s", req.URL.Scheme)
+	}
+
+	if req.Method != "" && !validMethod(req.Method) {
+		closeRequestBody(req)
+		return nil, fmt.Errorf("quic: invalid method %q", req.Method)
+	}
+
+	hostname := authorityAddr("https", hostnameFromRequest(req))
+	cl, err := r.getClient(hostname, opt.OnlyCachedConn)
+	if err != nil {
+		return nil, err
+	}
+	return cl.RoundTrip(req)
+}
+
+// RoundTrip does a round trip.
+func (r *RoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	return r.RoundTripOpt(req, RoundTripOpt{})
+}
+
+func (r *RoundTripper) getClient(hostname string, onlyCached bool) (http.RoundTripper, error) {
+	r.mutex.Lock()
+	defer r.mutex.Unlock()
+
+	if r.clients == nil {
+		r.clients = make(map[string]roundTripCloser)
+	}
+
+	client, ok := r.clients[hostname]
+	if !ok {
+		if onlyCached {
+			return nil, ErrNoCachedConn
+		}
+		client = newClient(
+			hostname,
+			r.TLSClientConfig,
+			&roundTripperOpts{DisableCompression: r.DisableCompression},
+			r.QuicConfig,
+			r.Dial,
+		)
+		r.clients[hostname] = client
+	}
+	return client, nil
+}
+
+// Close closes the QUIC connections that this RoundTripper has used
+func (r *RoundTripper) Close() error {
+	r.mutex.Lock()
+	defer r.mutex.Unlock()
+	for _, client := range r.clients {
+		if err := client.Close(); err != nil {
+			return err
+		}
+	}
+	r.clients = nil
+	return nil
+}
+
+func closeRequestBody(req *http.Request) {
+	if req.Body != nil {
+		req.Body.Close()
+	}
+}
+
+func validMethod(method string) bool {
+	/*
+				     Method         = "OPTIONS"                ; Section 9.2
+		   		                    | "GET"                    ; Section 9.3
+		   		                    | "HEAD"                   ; Section 9.4
+		   		                    | "POST"                   ; Section 9.5
+		   		                    | "PUT"                    ; Section 9.6
+		   		                    | "DELETE"                 ; Section 9.7
+		   		                    | "TRACE"                  ; Section 9.8
+		   		                    | "CONNECT"                ; Section 9.9
+		   		                    | extension-method
+		   		   extension-method = token
+		   		     token          = 1*<any CHAR except CTLs or separators>
+	*/
+	return len(method) > 0 && strings.IndexFunc(method, isNotToken) == -1
+}
+
+// copied from net/http/http.go
+func isNotToken(r rune) bool {
+	return !httpguts.IsTokenRune(r)
+}

vendor/github.com/lucas-clemente/quic-go/h2quic/server.go

@@ -0,0 +1,402 @@
+package h2quic
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"runtime"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	quic "github.com/lucas-clemente/quic-go"
+	"github.com/lucas-clemente/quic-go/internal/protocol"
+	"github.com/lucas-clemente/quic-go/internal/utils"
+	"github.com/lucas-clemente/quic-go/qerr"
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/hpack"
+)
+
+type streamCreator interface {
+	quic.Session
+	GetOrOpenStream(protocol.StreamID) (quic.Stream, error)
+}
+
+type remoteCloser interface {
+	CloseRemote(protocol.ByteCount)
+}
+
+// allows mocking of quic.Listen and quic.ListenAddr
+var (
+	quicListen     = quic.Listen
+	quicListenAddr = quic.ListenAddr
+)
+
+// Server is a HTTP2 server listening for QUIC connections.
+type Server struct {
+	*http.Server
+
+	// By providing a quic.Config, it is possible to set parameters of the QUIC connection.
+	// If nil, it uses reasonable default values.
+	QuicConfig *quic.Config
+
+	// Private flag for demo, do not use
+	CloseAfterFirstRequest bool
+
+	port uint32 // used atomically
+
+	listenerMutex sync.Mutex
+	listener      quic.Listener
+	closed        bool
+
+	supportedVersionsAsString string
+
+	logger utils.Logger // will be set by Server.serveImpl()
+}
+
+// ListenAndServe listens on the UDP address s.Addr and calls s.Handler to handle HTTP/2 requests on incoming connections.
+func (s *Server) ListenAndServe() error {
+	if s.Server == nil {
+		return errors.New("use of h2quic.Server without http.Server")
+	}
+	return s.serveImpl(s.TLSConfig, nil)
+}
+
+// ListenAndServeTLS listens on the UDP address s.Addr and calls s.Handler to handle HTTP/2 requests on incoming connections.
+func (s *Server) ListenAndServeTLS(certFile, keyFile string) error {
+	var err error
+	certs := make([]tls.Certificate, 1)
+	certs[0], err = tls.LoadX509KeyPair(certFile, keyFile)
+	if err != nil {
+		return err
+	}
+	// We currently only use the cert-related stuff from tls.Config,
+	// so we don't need to make a full copy.
+	config := &tls.Config{
+		Certificates: certs,
+	}
+	return s.serveImpl(config, nil)
+}
+
+// Serve an existing UDP connection.
+func (s *Server) Serve(conn net.PacketConn) error {
+	return s.serveImpl(s.TLSConfig, conn)
+}
+
+func (s *Server) serveImpl(tlsConfig *tls.Config, conn net.PacketConn) error {
+	if s.Server == nil {
+		return errors.New("use of h2quic.Server without http.Server")
+	}
+	s.logger = utils.DefaultLogger.WithPrefix("server")
+	s.listenerMutex.Lock()
+	if s.closed {
+		s.listenerMutex.Unlock()
+		return errors.New("Server is already closed")
+	}
+	if s.listener != nil {
+		s.listenerMutex.Unlock()
+		return errors.New("ListenAndServe may only be called once")
+	}
+
+	var ln quic.Listener
+	var err error
+	if conn == nil {
+		ln, err = quicListenAddr(s.Addr, tlsConfig, s.QuicConfig)
+	} else {
+		ln, err = quicListen(conn, tlsConfig, s.QuicConfig)
+	}
+	if err != nil {
+		s.listenerMutex.Unlock()
+		return err
+	}
+	s.listener = ln
+	s.listenerMutex.Unlock()
+
+	for {
+		sess, err := ln.Accept()
+		if err != nil {
+			return err
+		}
+		go s.handleHeaderStream(sess.(streamCreator))
+	}
+}
+
+func (s *Server) handleHeaderStream(session streamCreator) {
+	stream, err := session.AcceptStream()
+	if err != nil {
+		session.CloseWithError(quic.ErrorCode(qerr.InvalidHeadersStreamData), err)
+		return
+	}
+
+	hpackDecoder := hpack.NewDecoder(4096, nil)
+	h2framer := http2.NewFramer(nil, stream)
+
+	var headerStreamMutex sync.Mutex // Protects concurrent calls to Write()
+	for {
+		if err := s.handleRequest(session, stream, &headerStreamMutex, hpackDecoder, h2framer); err != nil {
+			// QuicErrors must originate from stream.Read() returning an error.
+			// In this case, the session has already logged the error, so we don't
+			// need to log it again.
+			errorCode := qerr.InternalError
+			if qerr, ok := err.(*qerr.QuicError); ok {
+				errorCode = qerr.ErrorCode
+				s.logger.Errorf("error handling h2 request: %s", err.Error())
+			}
+			session.CloseWithError(quic.ErrorCode(errorCode), err)
+			return
+		}
+	}
+}
+
+func (s *Server) handleRequest(session streamCreator, headerStream quic.Stream, headerStreamMutex *sync.Mutex, hpackDecoder *hpack.Decoder, h2framer *http2.Framer) error {
+	h2frame, err := h2framer.ReadFrame()
+	if err != nil {
+		return qerr.Error(qerr.HeadersStreamDataDecompressFailure, "cannot read frame")
+	}
+	var h2headersFrame *http2.HeadersFrame
+	switch f := h2frame.(type) {
+	case *http2.PriorityFrame:
+		// ignore PRIORITY frames
+		s.logger.Debugf("Ignoring H2 PRIORITY frame: %#v", f)
+		return nil
+	case *http2.HeadersFrame:
+		h2headersFrame = f
+	default:
+		return qerr.Error(qerr.InvalidHeadersStreamData, "expected a header frame")
+	}
+
+	if !h2headersFrame.HeadersEnded() {
+		return errors.New("http2 header continuation not implemented")
+	}
+	headers, err := hpackDecoder.DecodeFull(h2headersFrame.HeaderBlockFragment())
+	if err != nil {
+		s.logger.Errorf("invalid http2 headers encoding: %s", err.Error())
+		return err
+	}
+
+	req, err := requestFromHeaders(headers)
+	if err != nil {
+		return err
+	}
+
+	if s.logger.Debug() {
+		s.logger.Infof("%s %s%s, on data stream %d", req.Method, req.Host, req.RequestURI, h2headersFrame.StreamID)
+	} else {
+		s.logger.Infof("%s %s%s", req.Method, req.Host, req.RequestURI)
+	}
+
+	dataStream, err := session.GetOrOpenStream(protocol.StreamID(h2headersFrame.StreamID))
+	if err != nil {
+		return err
+	}
+	// this can happen if the client immediately closes the data stream after sending the request and the runtime processes the reset before the request
+	if dataStream == nil {
+		return nil
+	}
+
+	// handleRequest should be as non-blocking as possible to minimize
+	// head-of-line blocking. Potentially blocking code is run in a separate
+	// goroutine, enabling handleRequest to return before the code is executed.
+	go func() {
+		streamEnded := h2headersFrame.StreamEnded()
+		if streamEnded {
+			dataStream.(remoteCloser).CloseRemote(0)
+			streamEnded = true
+			_, _ = dataStream.Read([]byte{0}) // read the eof
+		}
+
+		req = req.WithContext(dataStream.Context())
+		reqBody := newRequestBody(dataStream)
+		req.Body = reqBody
+
+		req.RemoteAddr = session.RemoteAddr().String()
+
+		responseWriter := newResponseWriter(headerStream, headerStreamMutex, dataStream, protocol.StreamID(h2headersFrame.StreamID), s.logger)
+
+		handler := s.Handler
+		if handler == nil {
+			handler = http.DefaultServeMux
+		}
+		panicked := false
+		func() {
+			defer func() {
+				if p := recover(); p != nil {
+					// Copied from net/http/server.go
+					const size = 64 << 10
+					buf := make([]byte, size)
+					buf = buf[:runtime.Stack(buf, false)]
+					s.logger.Errorf("http: panic serving: %v\n%s", p, buf)
+					panicked = true
+				}
+			}()
+			handler.ServeHTTP(responseWriter, req)
+		}()
+		if panicked {
+			responseWriter.WriteHeader(500)
+		} else {
+			responseWriter.WriteHeader(200)
+		}
+		if responseWriter.dataStream != nil {
+			if !streamEnded && !reqBody.requestRead {
+				// in gQUIC, the error code doesn't matter, so just use 0 here
+				responseWriter.dataStream.CancelRead(0)
+			}
+			responseWriter.dataStream.Close()
+		}
+		if s.CloseAfterFirstRequest {
+			time.Sleep(100 * time.Millisecond)
+			session.Close()
+		}
+	}()
+
+	return nil
+}
+
+// Close the server immediately, aborting requests and sending CONNECTION_CLOSE frames to connected clients.
+// Close in combination with ListenAndServe() (instead of Serve()) may race if it is called before a UDP socket is established.
+func (s *Server) Close() error {
+	s.listenerMutex.Lock()
+	defer s.listenerMutex.Unlock()
+	s.closed = true
+	if s.listener != nil {
+		err := s.listener.Close()
+		s.listener = nil
+		return err
+	}
+	return nil
+}
+
+// CloseGracefully shuts down the server gracefully. The server sends a GOAWAY frame first, then waits for either timeout to trigger, or for all running requests to complete.
+// CloseGracefully in combination with ListenAndServe() (instead of Serve()) may race if it is called before a UDP socket is established.
+func (s *Server) CloseGracefully(timeout time.Duration) error {
+	// TODO: implement
+	return nil
+}
+
+// SetQuicHeaders can be used to set the proper headers that announce that this server supports QUIC.
+// The values that are set depend on the port information from s.Server.Addr, and currently look like this (if Addr has port 443):
+//  Alt-Svc: quic=":443"; ma=2592000; v="33,32,31,30"
+func (s *Server) SetQuicHeaders(hdr http.Header) error {
+	port := atomic.LoadUint32(&s.port)
+
+	if port == 0 {
+		// Extract port from s.Server.Addr
+		_, portStr, err := net.SplitHostPort(s.Server.Addr)
+		if err != nil {
+			return err
+		}
+		portInt, err := net.LookupPort("tcp", portStr)
+		if err != nil {
+			return err
+		}
+		port = uint32(portInt)
+		atomic.StoreUint32(&s.port, port)
+	}
+
+	if s.supportedVersionsAsString == "" {
+		var versions []string
+		for _, v := range protocol.SupportedVersions {
+			versions = append(versions, v.ToAltSvc())
+		}
+		s.supportedVersionsAsString = strings.Join(versions, ",")
+	}
+
+	hdr.Add("Alt-Svc", fmt.Sprintf(`quic=":%d"; ma=2592000; v="%s"`, port, s.supportedVersionsAsString))
+
+	return nil
+}
+
+// ListenAndServeQUIC listens on the UDP network address addr and calls the
+// handler for HTTP/2 requests on incoming connections. http.DefaultServeMux is
+// used when handler is nil.
+func ListenAndServeQUIC(addr, certFile, keyFile string, handler http.Handler) error {
+	server := &Server{
+		Server: &http.Server{
+			Addr:    addr,
+			Handler: handler,
+		},
+	}
+	return server.ListenAndServeTLS(certFile, keyFile)
+}
+
+// ListenAndServe listens on the given network address for both, TLS and QUIC
+// connetions in parallel. It returns if one of the two returns an error.
+// http.DefaultServeMux is used when handler is nil.
+// The correct Alt-Svc headers for QUIC are set.
+func ListenAndServe(addr, certFile, keyFile string, handler http.Handler) error {
+	// Load certs
+	var err error
+	certs := make([]tls.Certificate, 1)
+	certs[0], err = tls.LoadX509KeyPair(certFile, keyFile)
+	if err != nil {
+		return err
+	}
+	// We currently only use the cert-related stuff from tls.Config,
+	// so we don't need to make a full copy.
+	config := &tls.Config{
+		Certificates: certs,
+	}
+
+	// Open the listeners
+	udpAddr, err := net.ResolveUDPAddr("udp", addr)
+	if err != nil {
+		return err
+	}
+	udpConn, err := net.ListenUDP("udp", udpAddr)
+	if err != nil {
+		return err
+	}
+	defer udpConn.Close()
+
+	tcpAddr, err := net.ResolveTCPAddr("tcp", addr)
+	if err != nil {
+		return err
+	}
+	tcpConn, err := net.ListenTCP("tcp", tcpAddr)
+	if err != nil {
+		return err
+	}
+	defer tcpConn.Close()
+
+	tlsConn := tls.NewListener(tcpConn, config)
+	defer tlsConn.Close()
+
+	// Start the servers
+	httpServer := &http.Server{
+		Addr:      addr,
+		TLSConfig: config,
+	}
+
+	quicServer := &Server{
+		Server: httpServer,
+	}
+
+	if handler == nil {
+		handler = http.DefaultServeMux
+	}
+	httpServer.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		quicServer.SetQuicHeaders(w.Header())
+		handler.ServeHTTP(w, r)
+	})
+
+	hErr := make(chan error)
+	qErr := make(chan error)
+	go func() {
+		hErr <- httpServer.Serve(tlsConn)
+	}()
+	go func() {
+		qErr <- quicServer.Serve(udpConn)
+	}()
+
+	select {
+	case err := <-hErr:
+		quicServer.Close()
+		return err
+	case err := <-qErr:
+		// Cannot close the HTTP server or wait for requests to complete properly :/
+		return err
+	}
+}